منابع مشابه
Developments in Wideband Timing of Millisecond Pulsars
Pulsar timing is an extremely powerful technique in the field of observational astronomy, particularly when applied to millisecond pulsars (MSPs). In effect, MSPs act as precise laboratory clocks with which one can make precise physical measurements via pulsar timing. However, the recent development of wideband, low-frequency receiver systems that allow simultaneous observation of much of the r...
متن کاملNoise Reduction in Millisecond Pulsar Timing
Astronomers use pulsars as astronomical clocks to perform physical tests, such as in testing Einstein's Theory of General Relativity. As these tests require more precise clock time measurements, we run into problems associated with the pulses traveling through particles in space. Using data taken simultaneously at two radio telescopes, we looked to improve the precision of measurements taken of...
متن کاملTiming the millisecond pulsars in 47 Tucanae
In the last ten years 20 millisecond pulsars have been discovered in the globular cluster 47 Tucanae. Hitherto, only three of these pulsars had published timing solutions. Here we improve upon these three and present 12 new solutions. These measurements can be used to determine a variety of physical properties of the pulsars and of the cluster. The 15 pulsars have positions determined with typi...
متن کاملTiming Measurements and Their Implications for Four Binary Millisecond Pulsars
We present timing observations of four millisecond pulsars, using data obtained over three years at the ATNF Parkes and NRAL Jodrell Bank radio telescopes. Astrometric, spin, and binary parameters are updated, and substantially improved for three pulsars, PSRs J0613−0200, J1045−4509 and J1643−1224. We have measured the time variation of the projected semi-major axis of the PSR J0437−4715 orbit ...
متن کاملHigh-precision Timing of Millisecond Pulsars and Precision Astrometry
We present the technique of long-term, high-precision timing of millisecond pulsars as applied to precision astrometry. We provide a tutorial on pulsars and pulsar timing, as well as up-to-date results of long-term timing observations of two millisecond pulsars, PSRs B1855+09 and B1937+21. We consider the feasibility of tying the extragalactic and optical reference frames to that deened by sola...
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ژورنال
عنوان ژورنال: Behavior Research Methods, Instruments, & Computers
سال: 2001
ISSN: 0743-3808,1532-5970
DOI: 10.3758/bf03195363